Thermal analysis methods were used to investigate highdensity polyethylene (HDPE) stabilised with the addition of 0.5-1.0% antioxidant. Antioxidant was produced on the basis of gossypol with hexamethylenediamine (GHMDA) and with urea adduct (GUA).

The corrosion inhibiting capacity of oligomeric gossypol derivatives has been studied. It is shown that oligomeric gossypol-based corrosion inhibitors with urea adducts effectively protect steel against corrosion in a saline medium, while in acidic media the gossypol derivatives with melamine exhibit effective protection.